Patents by Inventor Fred Sundström
Fred Sundström has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11958004Abstract: In a method and a system for purification of contaminated oil, the contaminated oil and a liquid separation aid are provided in a mixing tank and then mixed into a mixture. Thereafter, the mixture is filtered.Type: GrantFiled: February 3, 2020Date of Patent: April 16, 2024Assignee: SKF RECONDOIL ABInventors: Thomas Persson, Tomas Östberg, Fred Sundström
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Patent number: 11752452Abstract: A method and a system for purification of oil, said method comprising the steps of: -providing separation aid and oil to be purified to at least one sedimentation tank; -waiting for allowing a sludge phase to sediment to a bottom part of the sedimentation tank, said sludge phase comprising the separation aid together with impurities from the oil; -removing an oil phase not comprising said sludge phase from the at least one sedimentation tank; and -filtering said oil phase through a depth filter for removing any possible remaining separation aid and impurities.Type: GrantFiled: August 30, 2022Date of Patent: September 12, 2023Assignee: Recondoil Sweden ABInventors: Fred Sundström, Thomas Persson
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Publication number: 20220410038Abstract: A method and a system for purification of oil, said method comprising the steps of: -providing separation aid and oil to be purified to at least one sedimentation tank; -waiting for allowing a sludge phase to sediment to a bottom part of the sedimentation tank, said sludge phase comprising the separation aid together with impurities from the oil; -removing an oil phase not comprising said sludge phase from the at least one sedimentation tank; and -filtering said oil phase through a depth filter for removing any possible remaining separation aid and impurities.Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Fred SUNDSTRÖM, Thomas Persson
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Patent number: 11458420Abstract: A method and a system for purification of oil, said method comprising the steps of: —providing separation aid and oil to be purified to at least one sedimentation tank; —waiting for allowing a sludge phase to sediment to a bottom part of the sedimentation tank, said sludge phase comprising the separation aid together with impurities from the oil; —removing an oil phase not comprising said sludge phase from the at least one sedimentation tank; and —filtering said oil phase through a depth filter for removing any possible remaining separation aid and impurities.Type: GrantFiled: April 24, 2018Date of Patent: October 4, 2022Assignee: Recondoil Sweden ABInventors: Fred Sundström, Thomas Persson
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Publication number: 20220111317Abstract: In a method for reconditioning an industrial oil and in an oil recovery system therefor, a used industrial oil is reconditioned by adding a liquid separation booster to the used industrial oil, and then the separation booster with attracted impurities is separated from the used industrial oil while leaving at least one specific additive in the oil. The separation booster is designed to attract impurities in the used oil while not attracting at least one specific additive in the oil.Type: ApplicationFiled: March 2, 2020Publication date: April 14, 2022Inventors: Fred SUNDSTRÖM, Tomas ÖSTBERG, Thomas PERSSON
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Patent number: 11247147Abstract: A system (1; 101) and a method for purification of oil, said system comprising:—at least one feed tank (3) comprising oil to be purified;—a separation aid dosing device(13);—at least one basic sedimentation tank (21a, 21b) comprising at least one inlet (23a, 23b) connected to the feed tank (3) and to the separation aid dosing device (13) for receiving oil to be purified and separation aid, said at least one basic sedimentation tank (21a, 21b) further comprising at least one sludge phase outlet (41a, 41b) provided in a bottom part (37a, 37b) of the basic sedimentation tank and at least one oil phase outlet (39a, 39b);—at least one advanced sedimentation tank (121) comprising at least one sludge phase inlet (122) connected to the at least one sludge phase outlet (41a, 41b) of the at least one basic sedimentation tank (21a, 21b), said advanced sedimentation tank (121) further comprising at least one sludge phase outlet (141; 141a, 141b) connected to a sludge tank (143) and at least one oil phase outlet (139a, 13Type: GrantFiled: April 24, 2018Date of Patent: February 15, 2022Assignee: RECONDOIL SWEDEN ABInventors: Fred Sundström, Thomas Persson
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Publication number: 20220016554Abstract: In a method and a system for purification of contaminated oil, the contaminated oil and a liquid separation aid are provided in a mixing tank and then mixed into a mixture. Thereafter, the mixture is filtered.Type: ApplicationFiled: February 3, 2020Publication date: January 20, 2022Inventors: Thomas PERSSON, Tomas ÖSTBERG, Fred SUNDSTRÖM
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Patent number: 11130075Abstract: A purification system and a method for purification of slop oil and industrial emulsions, wherein the purification system can handle two processes in parallel, a slop oil purification process and an industrial emulsion purification process, said system comprising: —at least one slop oil centrifugal separator (5) into which slop oil is provided for separation of water and oil; —at least one emulsion centrifugal separator (25) into which an industrial emulsion is provided for separation of oil and water; —a first redirecting fluid connection (37, 37?) arranged for transferring oil separated from the industrial emulsion in the emulsion centrifugal separator (25) to the slop oil centrifugal separator (5) possibly via a slop oil tank (3).Type: GrantFiled: May 8, 2017Date of Patent: September 28, 2021Assignee: ROCCO Slop ABInventors: Fred Sundström, Thomas Persson, Fredrik Ajnefors
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Patent number: 10995279Abstract: A method and a system for purification of contaminated oil. Said method comprises the steps of: —providing contaminated oil and a separation aid in a tank (3); —waiting for allowing a sludge phase comprising the separation aid together with impurities from the oil to settle in a bottom part (4) of the tank (3); —reusing the sludge phase for purification of new contaminated oil.Type: GrantFiled: April 24, 2018Date of Patent: May 4, 2021Assignee: Recondoil Sweden ABInventors: Fred Sundström, Thomas Persson
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Patent number: 10994225Abstract: Tank for holding contents which can separate into different phases, said tank comprising at least two outlet pipes each provided through a bottom of the tank with a first end of the outlet pipes provided outside the tank and a second end provided inside the tank, the second ends of the at least two outlet pipes being provided at different heights within the tank.Type: GrantFiled: October 13, 2017Date of Patent: May 4, 2021Assignee: Rocco Slop ABInventors: Fred Sundström, Mikael Jönsson, Thomas Persson
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Publication number: 20210101094Abstract: A method and a system for purification of oil, said method comprising the steps of: —providing separation aid and oil to be purified to at least one sedimentation tank; —waiting for allowing a sludge phase to sediment to a bottom part of the sedimentation tank, said sludge phase comprising the separation aid together with impurities from the oil; —removing an oil phase not comprising said sludge phase from the at least one sedimentation tank; and —filtering said oil phase through a depth filter for removing any possible remaining separation aid and impurities.Type: ApplicationFiled: April 24, 2018Publication date: April 8, 2021Inventors: Fred SUNDSTRÖM, Thomas PERSSON
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Publication number: 20200230520Abstract: A purification system and a method for purification of slop oil and industrial emulsions, wherein the purification system can handle two processes in parallel, a slop oil purification process and an industrial emulsion purification process, said system comprising: —at least one slop oil centrifugal separator (5) into which slop oil is provided for separation of water and oil; —at least one emulsion centrifugal separator (25) into which an industrial emulsion is provided for separation of oil and water; —a first redirecting fluid connection (37, 37?) arranged for transferring oil separated from the industrial emulsion in the emulsion centrifugal separator (25) to the slop oil centrifugal separator (5) possibly via a slop oil tank (3).Type: ApplicationFiled: May 8, 2017Publication date: July 23, 2020Inventors: Fred SUNDSTRÖM, Thomas PERSSON, Fredrik AJNEFORS
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Publication number: 20200061498Abstract: A system (1; 101) and a method for purification of oil, said system comprising:—at least one feed tank (3) comprising oil to be purified;—a separation aid dosing device(13);—at least one basic sedimentation tank (21a, 21b) comprising at least one inlet (23a, 23b) connected to the feed tank (3) and to the separation aid dosing device (13) for receiving oil to be purified and separation aid, said at least one basic sedimentation tank (21a, 21b) further comprising at least one sludge phase outlet (41a, 41b) provided in a bottom part (37a, 37b) of the basic sedimentation tank and at least one oil phase outlet (39a, 39b);—at least one advanced sedimentation tank (121) comprising at least one sludge phase inlet (122) connected to the at least one sludge phase outlet (41a, 41b) of the at least one basic sedimentation tank (21a, 21b), said advanced sedimentation tank (121) further comprising at least one sludge phase outlet (141; 141a, 141b) connected to a sludge tank (143) and at least one oil phase outlet (139a, 13Type: ApplicationFiled: April 24, 2018Publication date: February 27, 2020Inventors: Fred SUNDSTRÖM, Thomas PERSSON
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Publication number: 20200056102Abstract: A method and a system for purification of contaminated oil. Said method comprises the steps of: —providing contaminated oil and a separation aid in a tank (3); —waiting for allowing a sludge phase comprising the separation aid together with impurities from the oil to settle in a bottom part (4) of the tank (3); —reusing the sludge phase for purification of new contaminated oil.Type: ApplicationFiled: April 24, 2018Publication date: February 20, 2020Inventors: Fred SUNDSTRÖM, Thomas PERSSON
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Publication number: 20200054968Abstract: Tank for holding contents which can separate into different phases, said tank comprising at least two outlet pipes each provided through a bottom of the tank with a first end of the outlet pipes provided outside the tank and a second end provided inside the tank, the second ends of the at least two outlet pipes being provided at different heights within the tank.Type: ApplicationFiled: October 13, 2017Publication date: February 20, 2020Inventors: Fred SUNDSTRÖM, Mikael JÖNSSON, Thomas PERSSON
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Patent number: 6974030Abstract: A screw magazine includes a form-stiff framework (1) having a front side (4) and a back side (5) between which a plurality of mutually spaced-apart bores (10) extend, each one of which is delimited by an endless limiting wall (11) of a resilient, demolishable nature and of which at least some house screws (12) located at a distance from each other. The length of the individual screw (12) is smaller than the depth of the framework (1) counted as the distance between the front and back sides (4, 5), a free tip of the individual screw being located at a certain distance inside the back side of the framework, at the same time as an end surface on the head of the individual screw (12) is situated in flush with the front side (4) of the framework.Type: GrantFiled: July 10, 2000Date of Patent: December 13, 2005Inventor: Fred Sundström